I love them, this section should have more musicians, I might try to do something on the guitar or the piano. Anyways, nice compositions, jazz is always harder to create if you see what I mean. Most modern musics simply repeat a scheme, maybe add a bridge or two, an intro and if lucky a solo; that's what I like about jazz, it's different and clearly skill demanding.
My favourite was definately the first one, very catchy and I loved the mutating melody. At the start of the last one, I thought I was listening to Unforgiven III by Metallica =P
Do you do everything on the program or does it assist your recording of a real piano?